Biology EOC Review: L.18.12 Properties of Water

Front

What is the molecular structure of water?

Back

Water (H2O) consists of one oxygen atom covalently bonded to two hydrogen atoms, creating a bent shape.

Front

Why can water have no net charge but have slight charges in different parts of the molecule?

Back

The oxygen end is slightly negative and the hydrogen end is slightly positive.

Front

What property of water causes water molecules to attract to other water molecules?

Back

Cohesion.

Front

What word describes when water is attracted to other substances?

Back

Adhesion.

Front

What is the pH range of acidic solutions?

Back

Between 0 and 7.

Front

What is the pH of a neutral solution?

Back

7.

Front

What is the pH range of alkaline solutions?

Back

Above 7, typically up to 14.

Front

What is surface tension in water?

Back

Surface tension is the cohesive force at the surface of water that makes it behave like a stretched elastic membrane.

Front

What is capillary action?

Back

Capillary action is the ability of water to flow in narrow spaces against gravity, due to adhesion and cohesion.

Front

What is the significance of water being a polar molecule?

Back

Water's polarity allows it to dissolve many substances, making it a universal solvent.